Conveyor chain

Abstract

A conveyor chain includes a plurality of links, which is arranged in a series arrangement direction and made of a first plastic, and a plurality of pins. Each pin sequentially couples a corresponding one of the links to an adjacent one of the links in a pivotal manner. Each link has a mounting surface, on which an object can be mounted. Each pin has a core rod made of a metal and a cover member that covers the core rod and is made of a second plastic.

1 . A conveyor chain comprising:
 a plurality of links, which is arranged in a series arrangement direction, wherein each link is made of a first plastic and has a mounting surface, on which an object can be mounted; and   a plurality of pins, wherein each pin sequentially couples a corresponding one of the links to an adjacent one of the links in a pivotal manner,   wherein each pin has a core rod made of a metal and a cover member that covers the core rod and is made of a second plastic.   
     
     
         2 . The conveyor chain according to  claim 1 , wherein
 each cover member has an insertion portion, into which one of the core rods can be inserted, and   each core rod is inserted into one of the insertion portions.   
     
     
         3 . The conveyor chain according to  claim 1 , wherein each cover member is shaped like a tube and has a non-circular cross section. 
     
     
         4 . The conveyor chain according to  claim 1 , wherein
 the conveyor chain moves along a rail,   each link has a sliding surface that is slidable on the rail, and   the metal for the core rods is a magnetic metal.   
     
     
         5 . The conveyor chain according to  claim 1 , wherein a length of the core rod in an axial direction of each pin is equal to a length of the cover member in the axial direction. 
     
     
         6 . The conveyor chain according to  claim 1 , wherein a length of the core rod in an axial direction of each pin is smaller than a length of the cover member in the axial direction.